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02-20-2021, 05:37 PM #21
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- Aug 2020
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2 degrees 😀
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02-21-2021, 12:35 AM #22
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- Feb 2020
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- Hayden Lake, ID and near Elk City, ID
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Rob's comments are always "spot on".
Remember that Propane is like so many other natural compounds, it has a Freezing Point, a Melting (liquid) Point, and a Boiling (aka Gaseous) Point.
All Propane appliances run on Propane Gas. The propane you have available to use depends on the temperature and the tank size.
All propane tanks are filled to 80% full with liquid Propane. That leaves 20% of the top of the tank room available to store Gaseous propane.
The top 20% of a Propane tank represents the usable gas that you will get from "boiling off" the liquid propane.
Therefore, the larger the surface area of the tank above the 80% full mark, the more usable propane gas boiling off you will get.
A big horizontal tank produces much more usable gaseous vapor than a taller, small diameter tank.
Regarding temperature, think of Propane like a large curve.
The gaseous output of Liquid Propane is "zero" at -44F.
its output is optimum at about 70-90F.
Propane is most efficient and usable between about 20F and 80F.
If a tank gets over 120F, it can become a bit unstable.
Keep your tanks above zero in winter and below 100 in summer, and you'll be happy campers.Dan and "Big Red". Amateur Radio W7TNU.
2020 Chevy 3500HD High Country SRW, 6.6L DMX, 10 Speed Allison, 3:42, Cajun Red.
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02-21-2021, 01:29 AM #23
I have been camping at -12 F a few times. I never had any propane issues.
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02-21-2021, 06:21 AM #24
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- May 2017
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02-21-2021, 08:55 AM #25
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- Mar 2017
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- Pearland, TX
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My propane tanks would frost, then start to ice up near the bottom of the tank while running my 2000W rated Yamaha EF2400IS this week for temporary power at the house.
After ~8 hours in 23°F temperatures and generator continuous load ~14.45 Amps, the 20# tank's vapor pressure was low enough to cause the generator to start stumbling.
Weighed the tank after the ice had melted off, it was 18.2 lb, so estimate 1/3 gallon of propane still in the tank, its tare weight 16.6 lb.
Ran a 30 lb tank for ~12.5 hours before it had iced up enough for generator to stumble.
After the 30 lb tank had warmed up used it again for a couple more hours. The tank weighed 24.4 lb, its tare weight of 23 lb.- Gene
Kim & Gene
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